A 0.600-mm diameter wire stretches 0.500 of its length when it is ...

[jenna1]

A 0.600-mm diameter wire stretches 0.500 of its length when it is stretched with a tension of 20.0 N. What is the Young's modulus of this wire?
 
  A) 5.66  1010 N/m2
  B) 3.54  109 N/m2
  C) 1.41  1010 N/m2
  D) 6.43  109 N/m2
  E) 2.78  109 N/m2

Question 2

A 1000-kg object hangs from the lower end of a steel rod 5.0 m long that is suspended vertically. The diameter of the rod is 0.80 cm and Young's modulus for the rod is 210,000 MN/m2. What is the elongation of the rod due to this object?
 
  A) 1.2 cm
  B) 0.46 cm
  C) 0.12 cm
  D) 1.8 cm
  E) 0.047 cm

[gabrielle_lawrence]

Answer to Question 1

C

Answer to Question 2

B

[jenna1]

Excellent

[deja]

Gracias!